package com.shangye.core;

import com.shangye.http.HttpServletRequest;
import com.shangye.http.HttpServletResponse;

import java.io.*;
import java.lang.reflect.MalformedParameterizedTypeException;
import java.net.Socket;
import java.net.URISyntaxException;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

/**
 * 该线程任务负责处理与某个客户端的一次HTTP交互。
 * 由于HTTP协议要求客户端和服务端采取一问一答的原则，因此这里处理与客户端的一次交互规划
 * 为三个步骤:
 * 1:解析请求(将客户端发送过来的请求内容读取到)
 * 2:处理请求(根据请求内容进行对应的处理)
 * 3:发送响应(将处理结果回馈给浏览器)
 * 断开连接
 */
public class ClientHandler implements Runnable {
    private Socket socket;

    private static File rootDir;
    private static File staticDir;

    static {
        try {
            rootDir = new File(ClientHandler.class.getClassLoader().getResource(".").toURI());
            staticDir = new File(rootDir,"static");
        } catch (URISyntaxException e) {
            e.printStackTrace();
        }
    }

    public ClientHandler(Socket socket) {
        this.socket = socket;
    }

    @Override
    public void run() {
        try {
            // 1,解析请求
            HttpServletRequest request = new HttpServletRequest(socket);
            HttpServletResponse response = new HttpServletResponse(socket);
            // 2,处理请求
            String path = request.getUri();
            System.out.println(path);
            // 3,响应请求

            File file = new File(staticDir, path);
            System.out.println("文件是否存在：" + file.exists());
            if (file.exists()){
               response.setContentFile(file);
            }else {
                response.setStatusCode(404);
                response.setStatusReason("NotFound");
                file = new File(staticDir,"root/404.html");
                response.setContentFile(file);
            }

            response.respose();


        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            try {
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }


    }




}
